Novel puncture sampling needle and welding tool
By designing a new puncture sampling needle, the channel structure with obtuse angles is used to solve the problem that the sample is prone to residual when discharged, the effect of the sample being more prone to discharge is achieved, and the accuracy of the analysis and detection results are ensured.
Patent Information
- Application Number
- CN202421075683.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The channels connected to the liquid discharge port of the existing puncture sampling needle intersect perpendicularly with the channels connected to the liquid aspiration port of the needle tube, resulting in the sample being easily left on the inner wall of the needle tube when discharged, affecting the sample analysis and detection results.
A new type of puncture sampling needle is designed, and the needle body is equipped with a first channel communicating with the liquid suction port and a second channel communicating with the liquid ejection port. The second channel intersects with the first channel to form an obtuse angle to ensure that the sample is more likely to flow out when discharged and reduces residue.
Through the design of the new puncture sampling needle, the samples are easier to discharge from the tube, reducing residue in the tube, and ensuring the accuracy of sample analysis and detection results.
Smart Images
Figure CN222837859U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of puncture needles, and in particular to a novel puncture sampling needle and welding tooling. Background Art
[0002] In medical analysis and testing instruments such as blood cell analyzers, urine analyzers, and specific protein analyzers, it is often necessary to use a puncture sampling needle to inject trace amounts of liquid into different reaction cups. The working principle of the puncture sampling needle is to control the plunger pump through the PLC to transport the collected sample from the liquid suction port of the sampling needle to the liquid discharge port, thereby discharging the sample into the reaction cup for analysis and testing. The channel connected to the liquid discharge port of the currently used puncture sampling needle intersects vertically with the channel connected to the liquid suction port of the syringe, which makes it easy for the sample to remain on the inner wall of the syringe when it is discharged from the sampling needle, resulting in a low sample concentration in the reaction cup, affecting the analysis and testing results of the sample. Utility Model Content
[0003] The purpose of this application is to provide a new type of puncture sampling needle and welding tooling to solve the problem of residual liquid when the sampling needle spits out liquid.
[0004] In a first aspect, the present application provides a novel puncture sampling needle, comprising:
[0005] A needle body, wherein one end of the needle body is provided with a liquid suction port, a first channel connected to the liquid suction port is provided inside the needle body, the first channel extends along the extension direction of the needle body, a liquid discharge port is provided on the side wall of the end of the needle body away from the liquid suction port, a second channel connected to the liquid discharge port is provided inside the needle body, an end of the second channel away from the liquid discharge port is connected to an end of the first channel away from the liquid suction port, and the second channel intersects with the first channel to form an obtuse angle.
[0006] According to the technical solution provided in certain embodiments of the present application, the needle body includes a needle tube and a plug arranged at one end of the needle tube, the first channel is arranged in the needle tube, the liquid suction port is arranged at an end of the needle tube away from the plug, and the side of the needle tube and the plug close to each other jointly form the second channel and the liquid discharge port.
[0007] According to the technical solution provided in certain embodiments of the present application, the end face of the needle tube away from the liquid suction port is a first end face, a concave groove is provided on the first end face, the concave groove is recessed in the direction away from the plug, one end of the concave groove is connected to the first channel, and the other end extends to the side wall of the needle tube, the end face of the plug close to the needle tube is a second end face, the second end face is a plane, and the second end face and the inner wall of the concave groove together form the second channel.
[0008] According to the technical solutions provided in certain embodiments of the present application, both the first end face and the second end face are parallel to the extension direction of the concave groove.
[0009] According to the technical solutions provided in certain embodiments of the present application, the end of the plug away from the needle tube has a tip structure, and the tip structure faces a direction away from the needle tube.
[0010] According to the technical solution provided in certain embodiments of the present application, the end face of the plug away from the needle tube is a third end face, the third end face is parallel to the second end face, and the third end face and the side wall of the plug together form the tip structure.
[0011] According to the technical solution provided in certain embodiments of the present application, a clamping piece is sleeved on the outer wall of one end of the needle tube close to the liquid suction port, and a circle of clamping grooves is provided on the circumferential outer wall of the clamping piece. The clamping grooves are recessed in the direction close to the needle tube, and the clamping grooves are used to be clamped and fixed with an external instrument.
[0012] In the second aspect, the present application provides a welding tool for processing a new type of puncture sampling needle as described in any of the above items, including: a base, a fixing seat is provided at both ends of the top of the base, a clamping piece is provided on the fixing seat, each of the clamping pieces is provided with a clamping hole, one of the clamping holes is used to clamp and fix the needle tube, and the other clamping hole is used to clamp and fix the plug, the two clamping holes are aligned in the through-direction of the hole, and the clamping piece can rotate around the extension direction of the clamping hole.
[0013] Compared with the prior art, the present application has the following beneficial effects: the present application provides a novel puncture sampling needle, the sampling needle comprising a needle body, a liquid suction port is provided at one end of the needle body, a first channel connected to the liquid suction port is provided inside the needle body, the first channel extends along the extension direction of the needle body, a liquid discharge port is provided on the side wall of the end of the needle body away from the liquid suction port, a second channel connected to the liquid discharge port is provided inside the needle body, an end of the second channel away from the liquid discharge port is connected to an end of the first channel away from the liquid suction port, and the second channel intersects with the first channel to form an obtuse angle. The needle body is in a vertical direction when in use, and after the sample is sucked in through the liquid suction port, it is transported through the first channel to the second channel, and finally the sample is discharged at the liquid discharge port. Since the angle formed by the intersection of the first channel and the second channel is an obtuse angle, the extension direction of the second channel will tilt downward, so that the collected liquid sample is easier to discharge out of the tube, reducing the residue, so as to ensure the analysis and detection results of the sample.
[0014] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0016] Figure 1 A schematic diagram of the structure of a new type of puncture sampling needle provided in Example 1 of the present application;
[0017] Figure 2 A three-dimensional diagram of the liquid discharge port of a novel puncture sampling needle provided in Example 1 of the present application;
[0018] Figure 3 This is a schematic structural diagram of a welding tool provided in Example 2 of the present application.
[0019] The text annotations in the figure represent:
[0020] 1. Needle tube; 2. Plug; 3. Connector; 4. Liquid suction port; 5. Liquid discharge port; 6. First channel; 7. Second channel; 8. Base; 9. Fixed seat; 10. Clamping part. DETAILED DESCRIPTION
[0021] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present application.
[0022] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0023] Example 1
[0024] Please refer to Figure 1 and Figure 2 This embodiment provides a new type of puncture sampling needle, including:
[0025] A needle body, one end of the needle body is provided with a liquid suction port 4, a first channel 6 connected to the liquid suction port 4 is provided inside the needle body, the first channel 6 extends along the extension direction of the needle body, a liquid discharge port 5 is provided on the side wall of the end of the needle body away from the liquid suction port 4, a second channel 7 connected to the liquid discharge port 5 is provided in the needle body, an end of the second channel 7 away from the liquid discharge port 5 is connected to an end of the first channel 6 away from the liquid suction port 4, and the second channel 7 intersects with the first channel 6 to form an obtuse angle.
[0026] The needle body is an elongated cylinder in appearance. A circular liquid suction port 4 is provided at one end of the needle body. A cylindrical channel connected to the liquid suction port 4 is provided inside the needle body, which is the first channel 6. A liquid discharge port 5 is provided on the circumferential side wall of the end of the needle body away from the liquid suction port 4. It should be noted that the end of the needle body away from the liquid suction port 4 is a relative statement, which does not mean that the liquid discharge port is at the edge of the end of the needle body away from the liquid suction port. A second channel 7 is connected between the first channel 6 and the liquid discharge port 5, and the angle formed by the intersection of the second channel 7 and the first channel 6 is an obtuse angle. The needle body is in a vertical direction when in use. After the sample is sucked in through the liquid suction port 4, it is transported to the second channel 7 through the first channel 6, and finally discharged from the liquid discharge port 5. Since the angle formed by the intersection of the first channel 6 and the second channel 7 is an obtuse angle, that is, the extension direction of the second channel 7 will be tilted downward, so that the collected liquid sample is easier to discharge out of the tube, reducing residues to ensure the analysis and detection results of the sample.
[0027] In a preferred embodiment, the needle body includes a needle tube 1 and a plug 2 arranged at one end of the needle tube 1, a first channel 6 is arranged in the needle tube 1, a liquid suction port 4 is arranged at the end of the needle tube 1 away from the plug 2, and the side where the needle tube 1 and the plug 2 are close to each other jointly form a second channel 7 and a liquid discharge port 5.
[0028] like Figure 1 and Figure 2 As shown, one end of the needle tube 1 is a liquid suction port 4, and the first channel 6 runs through the liquid suction port 4 and the other end of the needle tube 1 inside the needle tube 1. The end of the needle tube 1 away from the liquid suction port 4 is connected to the end of the plug 2 by welding. There are two ways to form the second channel and the liquid discharge port: one is to drill a hole on the needle tube 1 near the connection after welding, and the other is to reserve a concave groove at the end of the needle tube 1 away from the liquid suction port 4 before welding and then weld. In this embodiment, the second channel 7 and the liquid discharge port 5 are formed by first welding and then drilling.
[0029] In a preferred embodiment, the end face of the needle tube 1 away from the liquid suction port 4 is the first end face, and a concave groove is provided on the first end face, which is concave in the direction away from the plug 2, one end of the concave groove is connected to the first channel 6, and the other end extends to the side wall of the needle tube 1, and the end face of the plug 2 close to the needle tube 1 is the second end face, the second end face is a plane, and the second end face and the inner wall of the concave groove together form a second channel 7; the first end face and the second end face are parallel to the extension direction of the concave groove.
[0030] like Figure 2As shown, the first end face is the surface of the end of the needle tube 1 away from the liquid suction port 4. In this embodiment, after the needle tube 1 and the plug 2 are welded together, a concave groove is formed on the side wall of the needle tube 1 near the plug 2 by drilling with an electric spark machine. The concave groove forms an approximately semi-elliptical liquid discharge port 5 on the side wall of the needle tube 1. The plug 2 is a solid cylinder with the same diameter as the needle tube 1. The second end face is a plane of the plug 2 near the end of the needle tube 1. The second end face is just buckled on the first end face. The second end face and the inner wall of the concave groove together form a second channel 7. The extension direction of the concave groove intersects with the extension direction of the first channel 6 toward the liquid suction port 4 to form an obtuse angle. By setting the first end face, the second end face and the extension direction of the concave groove parallel, the inner walls of the second channel 7 intersect with the inner walls of the first channel 6 to form an obtuse angle.
[0031] In a preferred embodiment, the end of the plug 2 away from the needle tube 1 has a tip structure, and the tip structure faces a direction away from the needle tube 1 .
[0032] By arranging the end of the plug 2 away from the needle tube 1 as a pointed structure facing away from the needle tube 1, the plug 2 has a puncture function, for example, it can puncture the rubber stopper of the sample tube.
[0033] In a preferred embodiment, an end face of the plug 2 away from the needle tube 1 is a third end face, the third end face is parallel to the second end face, and the third end face and the side wall of the plug 2 together form a tip structure.
[0034] like Figure 1 As shown, the second end face and the third end face opposite to each other at both ends of the plug 2 are both inclined and parallel planes. Since the third end face is inclined, the third end face intersects with the circumferential side wall of the plug 2, forming a tip structure at the intersection point away from the liquid suction port 4. By designing the third end face and the second end face to be parallel to each other, the processing of the two end faces of the plug is facilitated.
[0035] In a preferred embodiment, a clamping member 3 is sleeved on the outer wall of the needle tube 1 near the liquid suction port 4, and a circle of clamping grooves is provided on the circumferential outer wall of the clamping member 3. The clamping grooves are recessed in the direction close to the needle tube 1, and are used to clamp and fix with external instruments.
[0036] like Figure 1 As shown, the clamping part 3 is welded to the needle tube 1, and the opening of the clamping slot faces the direction away from the axis of the needle tube 1. When the sampling needle is used in an external instrument such as a blood cell analyzer, a urine analyzer or a specific protein analyzer, the clamping slot on the clamping part 3 can be clamped and fixed to the relevant structure of the external instrument.
[0037] Working principle: Taking the application of the puncture sampling needle in Example 1 in a blood cell analyzer as an example, first use the tip structure at one end of the sampling needle plug 2 to pierce the rubber plug of the blood collection tube, and then insert the end of the sampling needle with the liquid suction port 4 into the blood collection tube. The sampling needle is fixed in the analyzer in the vertical direction by the clamping member 3. The sampling needle liquid suction port 4 is at the top, and the liquid discharge port 5 and the plug 2 are at the bottom and inserted into the reaction cup of the analyzer. The reaction cup is connected to the plunger pump in the instrument. Through the action of the plunger pump, the sampling needle liquid suction port 4 sucks the liquid sample from the blood collection tube. The liquid sample passes through the first channel 6 and the second channel 7 and is discharged into the reaction cup through the liquid discharge port 5. Because the inner wall of the second channel 7 is inclined downward, it is easy for the liquid to flow out, so the sample residue in the sampling needle is reduced, and the sample detection result is guaranteed. At the same time, because the liquid discharge port 5 is arranged on the side of the needle body, it can be against the inner side wall of the reaction cup. After the liquid sample is discharged from the liquid discharge port 5, it can stay at the bottom of the cup along the side wall of the reaction cup, avoiding the liquid sample from splashing out when the plunger pump pressure is high.
[0038] Example 2
[0039] Please refer to Figure 3 This embodiment provides a welding tool for processing a new type of puncture sampling needle provided in Example 1, including:
[0040] A base 8 is provided with fixing seats 9 at both ends of the top of the base 8, and a clamping piece 10 is provided on the fixing seat 9. Each clamping piece 10 is provided with a clamping hole, one of the clamping holes is used to clamp and fix the needle tube 1, and the other clamping hole is used to clamp and fix the plug 2. The two clamping holes are aligned in the through direction of the hole, and the clamping piece 10 can rotate around the extension direction of the clamping hole.
[0041] Please refer to Figure 3 The base 8 is a rectangular parallelepiped, and a fixing seat 9 is provided at both ends of the top surface of the base 8. The clamping member 10 is connected to the fixing seat 9 through a bearing. The needle tube 1 and the plug 2 can be fixed on the clamping member 10 on the corresponding side through the clamping hole. By adjusting the clamping position of the needle tube 1 and the plug 2 by the clamping member 10, the ends of the needle tube 1 and the plug 2 that are close to each other are connected to each other. By rotating any one of the clamping members 10, the needle tube 1 and the plug 2 can be rotated synchronously, thereby completing the laser welding of the needle tube 1 and the plug 2. Among them, the clamping member 10 can be, for example, a drill clamp in the prior art.
[0042] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.
Claims
1. A new type of puncture sampling needle, characterized in that: include: A needle body, wherein one end of the needle body is provided with a liquid suction port (4), a first channel (6) is provided inside the needle body and is connected to the liquid suction port (4), the first channel (6) extends along the extension direction of the needle body, a liquid discharge port (5) is provided on the side wall of the end of the needle body away from the liquid suction port (4), a second channel (7) is provided inside the needle body and is connected to the liquid discharge port (5), an end of the second channel (7) away from the liquid discharge port (5) is connected to an end of the first channel (6) away from the liquid suction port (4), and the second channel (7) intersects with the first channel (6) to form an obtuse angle.
2. A novel puncture sampling needle according to claim 1, characterized in that: The needle body comprises a needle tube (1) and a plug (2) arranged at one end of the needle tube (1); the first channel (6) is arranged in the needle tube (1); the liquid suction port (4) is arranged at an end of the needle tube (1) away from the plug (2); and the needle tube (1) and the plug (2) are close to each other and together form the second channel (7) and the liquid discharge port (5).
3. A novel puncture sampling needle according to claim 2, characterized in that: The end face of the needle tube (1) away from the liquid suction port (4) is a first end face, and a concave groove is provided on the first end face. The concave groove is recessed in a direction away from the plug (2). One end of the concave groove is connected to the first channel (6), and the other end extends to the side wall of the needle tube (1). The end face of the plug (2) close to the needle tube (1) is a second end face. The second end face is a plane. The second end face and the inner wall of the concave groove together form the second channel (7).
4. A novel puncture sampling needle according to claim 3, characterized in that: The first end surface and the second end surface are both parallel to the extending direction of the concave groove.
5. A novel puncture sampling needle according to claim 3, characterized in that: The end of the plug (2) away from the needle tube (1) has a tip structure, and the tip structure faces in a direction away from the needle tube (1).
6. A novel puncture sampling needle according to claim 5, characterized in that: An end face of the plug (2) away from the needle tube (1) is a third end face, the third end face is parallel to the second end face, and the third end face and the side wall of the plug (2) together form the tip structure.
7. A novel puncture sampling needle according to claim 2, characterized in that: A clamping piece (3) is sleeved on the outer wall of the needle tube (1) at one end close to the liquid suction port (4), and a circle of clamping grooves is provided on the circumferential outer wall of the clamping piece (3), the clamping grooves are recessed in a direction close to the needle tube (1), and the clamping grooves are used to clamp and fix with an external instrument.
8. A welding tool for processing a new type of puncture sampling needle as claimed in any one of claims 2 to 7, characterized in that: include: A base (8), wherein both ends of the top of the base (8) are provided with a fixing seat (9), and a clamping member (10) is provided on the fixing seat (9), and each of the clamping members (10) is provided with a clamping hole, wherein one of the clamping holes is used to clamp and fix the needle tube (1), and the other clamping hole is used to clamp and fix the plug (2), and the two clamping holes are aligned in the through-going direction of the hole, and the clamping member (10) can rotate around the extending direction of the clamping hole.